Medical Definition of Red blood cells. Red blood cells: The blood cells that carry oxygen. Red cells contain hemoglobin and it is the hemoglobin which permits them to transport oxygen (and carbon dioxide). Hemoglobin, aside from being a transport molecule, is a pigment. It gives the cells their red color (and their name).
Alexander Milne Calder (August 23, 1846 â June 4, 1923) was a Scottish American sculptor best known for the architectural sculpture of Philadelphia City Hall. Both his son, Alexander Stirling Calder, and grandson, Alexander Sandy Calder, became significant sculptors in the 20th century.
He himself was confused about the year of his birth, but January 11th 1755 is currently considered the most likely date. Portrait of Alexander Hamilton by John Trumbull (1792)One of the heroic figures of American independence was born on the island of Nevis in the British West Indies in 1755 or 1757. He himself seems to have been confused about the year, but 1755 is currently considered the more likely.